In the experiment, 15 Silicate bacterium strains were isolated from soil by routine separation method, which collected from South Mountain Park and Botanical Garden of west mountain in Xining .Two strains of silicate bacterium were screened, which distinctly showed the effect on the plant growth promoting. They were numbered strain GSY-1、strain GSY-3.
The test of Biological Characteristics showed that strain GSY-1 and strain GSY-3 were G-.The colony of strain GSY-1 are white, round, smooth surface, even...